A bird is flying north with a mass of 2.5kg has a momentum of 17.5kg m/s at what velocity is it flying
2 answers:
Answer:
v=7 m/s
Explanation:
momentum definition
The amount of movement or linear momentum is the product of velocity by mass. Velocity is a vector while mass is a scalar. As a result we obtain a vector with the same direction and direction as the velocity.
The magnitude of the momentum is calculated like this:
p=m*v Formula (1)
where:
p: momentum (kg*m/s)
m: mass (kg)
v: velocity (m/s)
Data
m = 2.5kg
p = 17.5kg m/s
Problem development
We replace the data in the formula (1)
17.5kg m/s = 2.5kg*v
v = 7 m/s
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Answer:
6 teaspoons of baking powder required.
Explanation:
Given that
According to the recipe of pancake,
For every teaspoon of salt, 2 teaspoons of baking baking powder is required.
To find:
How much baking powder will be needed, if 1 teaspoon of salt was used ?
Solution:
This problem can be solved using ratio.
teaspoon of salt : 2 teaspoons of baking powder
Let us multiply the above ratio with 3.
teaspoon of salt : 2
3 teaspoons of baking powder
OR
1 teaspoon of salt : 6 teaspoons of baking powder
So, answer is <em>6 teaspoons </em>of baking powder required.
Also, we can use the unitary method:
teaspoon of salt needs = 2 teaspoons of baking powder
1 teaspoon of salt needs = teaspoons of baking powder
1 teaspoon of salt needs = 2 3 = <em>6</em> teaspoons of baking powder needed
So, the answer is:
<em>6 teaspoons of baking powder </em>required.